Very useful and long-awaited plugin for adding watermarks (logo) to images in DokuWiki.

The only way now is to upload images with hardcoded watermarks. So all resized copies of an image have resized watermarks. And it's not good, for example, for previews. And it's impossible to change watermarks without reloading images.

It could be an action plugin, intercepting requests for resizing images, so scaled copies of image would have contain unscaled logo/watermarks. The plugin should add watermarks to pictures bigger than, for example, 150px*150px (may be configurable), watermark image - is PNG file with alpha channel (also configurable). And the last feature - it would be very comfortable to make some minor changes to media manager - add a check-box whether to show the logo/watermark or not for particular image.